Machine for rolling leather.



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MACHINE FOR ROLLING LEATHER.

APPLICATION HLEO DEC-21. l9l5.

Patented Dec. 5, 1916.

2 SHEETS-SHEET l- WILLIAM W. WHITING, OF NASHUA, NEW HAMPSHIRE.

MACHINE FOR ROLLING LEATHER.

Specification of Letters Patent.

Patented Doc. 5, 1916.

Application tiled December 27, 1815. Serial N 0. 68,831.

'1 '0 all whom it may concern Be it known that I, \VILLIAM \V. Wnrr- 1N0, a citizen of the United States, residin at Nashua, in the county of Hillsboro and State of New Hampshire, have invented certain new and useful Improvements 111 Machines for Rolling Leather; and I do hereby declare the following to be afull. clear, and exact description of the invention, such as will enable others skilled in the art to which it a )pertains to make and use the same.

T e present invention relates to an improvement in machines for rolling leather or the like. In machines of this character in which the roller is mounted for a swinging, compressing movement, the warping of the roller supporting beam disturbs t 1e perpemlicularity of the roller to its path of travel, 'with the result that the roller is not moved in correct relation with the bedplate supporting the hide or leather operated upon.

One object of the present invention is to produce an improved rollin machine in which the roller support has provision whereby the roller may be adjusted to its carrier so as to bring it to a condition of perpcndicularity with its path of motion.

Owing to the nature and construction of the roller it is a matter of considerable difliculty to ascertain readily and with the required degree of exactness how much the roller is out of perpendicular with its path of motion, and the consequent restorative adjustment of the roller can only be accomplished after much conjectural adjustment and trial of the roller in various positions.

Another object of the invention iS to produce a rolling machine having provision by virtue of which the roller ma be expeditiously and accurately adjusted:

In rolling machines as heretofore constructed the lifting and holding of the bedplate against the roller during the operation of the machine has imposed upon the operator a very fatiguing and exhausting labor, requiring him to possess exce tional strength and endurance. To roll leat er efficiently and rapid] demands not only these ihysical qualities, but also a high order of intelligence. Persons of the requisite stren 'th and intelligence are quite rare and are difiicut to secure.

A further object of the present invention, therefore, is to produce a rollingmachine of such construction that the labor required to operate it properly is vastly decreased, so that any person of suitable intelligence may run the machine without fati ue.

To the accomplishment c this object a feature of the invention consists in providing power devices for lifting the bedplate and olding it supported against the operation of the roller, these power devices being controlled by the operator but not imposing any laborious or fatiguing duty upon him.

A further object of the invention is to improve the construction of the supporting means for the bedplate and its carrier, provision being made for etlicaciously and positively ad'usting the bcdplate with relation to the roller and for securing the bedplate carrier in ad'ustcd position in such manner that any lia ility of the plate carrier to move is eliminated.

In rolling machines as heretofore constructed', provision has been made for automatically adjusting the level of the bedplate laterally so that the inequalities in the thickness of the hide or side of leather being subjectedvto the rollin operation may be compensated for in or er that the leather may be compressed uniformly.

Another object of the present invention is to construct the supporting means for the bed late in such a manner that the bed late wil be automatically adjusted vcrticall to com ensate for inequalities in the thickness of t e hide or side of leather. This selfadjustment of the bedplate both laterally and vertically results in the hide or side of leather being compressed uniformly so that the thick arts of the leather will retain their relative thickness with respect to the 5 thin parts of the leather.

To the accomplishment of the foregoing objects, the present invention consists in the improvements in rollin machines heroinafter described and particularly pointed out in the claims.

In the accompanying drawings illustrating the preferred form of the present invention, Figure 1 is a side elevation of a portion of a double rolling machine showing the application of the improvements of the invention thereto; Fig. 2 is a detail side elo-.

vation of the roller carrier and appurtenant parts; Fig. 3 is a plan of the bedplate, the

edplatc carrier, and the bedplate carrier support; Fi 4 is a sectional elevation taken on the line -4 of Fig. 3; Fig. 6 is a View dicated by the reference character .tfi'and taken on the line 5-5 of Fig. 2 looking to the right; Fig. 6 is a plan of the roller su port; and Fig. 7 is a perspective view of the roller adjusting gage.

In the rolling machine illustrated in the accompanying drawings, showing the application of the improvements of the present invention thereto, the roller 10 is mounted on a roller beam 11 pivoted at 12 to the frame of the machine. An oscillatory movement is imparted to the roller by means of a crank 13 through a link 14. The feature of the invention relating to the mounting of the roller is shown in Figs. 1, 2, 5 and 6. The roller 10 is fulcrumed in journals 16 carried by a roller support 17, the journals being secured in place by means of U-bolts 18. The roller support 17 as shown in Fig. 5, consists of a base 19 having two downwardly depending and oppositely disposed journal brackets 20. The roller support 17 is carried by a roller support carrier 21. which is inserted in a slot in the bottom of the roller beam 11 and bolted therein in the usual manner. The roller support carrier is in the shape of an inverted T, the crosspiece 23 of the T serving as a plate to which the base 19 of the roller support is bolted means of the U-bolts 18 and two throughbolts '24. The holes in the plate 23, through which these bolts pass, are elon ated, as shown in Fig. 6, so as to permit a justment of the roller support 17 on the plate 23.

The roller adjusting gage is generally inis shown in position of use in Figs. 1. .5 and 'lhc adjusting gage 26 consists of a U- shaped structure having slotted legs 27 by which it may be secured by screws to the front of the roller sup ort; and its bottom is formed as a straight edge 28. If the bedplate is in correct position and it is desired to ascertain whether the roller is in proper relation thereto, a line may be scri ed transversely on the bedplate by means of a trysquare, and then the adjusting gage may be secured to the roller support so that the straight edge 28 thereof is 1n close proximity with the bedplate. If the straight edge does not lie parallel with the line across the bedplate, it is apparent that by loosening the U-bolts 18 and the through-bolts 24 the roller sup ort may be turned so as to bring the straig t edge into parallelism with the transverse line and therefore into a position of erpendicularity with the edge of the bedp ate. When the roller has been properly adjusted and the roller support has been secured to the plate 23, the ad ustment gage 26 is removed from the roller support, and retained in some convenient place.

The bedplate 30 for so porting the work in o erative position is oosely carried on the edplate carrier 31 after the manner .of his weig shown in my Patent No. 671,255, dated April 2. 1901. The bedplate carrier 31 in the construction of the present invention is supported by a bedplate carrier support 3:2 upon which it may be adjusted laterally by means of adjusting screws 33 received in ears 3+ extendim upwardly from the support 32, longitudinal adjustment of the bedplate carrier being afforded by means of adjusting screws received in ears 36 extending upwardly at each end of the support 32. By means of this provision for both lateral and longitudinaladjustmcnt the bedplate may he brought into correct position with relation to the roller. The bedplatc, its carrier, and the carrier support are secured to a bedplate beam 38 by means of through-lmlts 39, of which there are four. extending straight down through the carrier, the support. and the bedplate beam. Shorter bolts -l() are provided for the purpose of securing the bedplate carrier support 32 to the bedplate beam 38 independently of the throughbolts 39. \Vhen adjustment of the bedplate is desired. the bolts 39 are loosened and the prsition of the plate adjusted by means of the screws 33 and 35 and thereupon the bolts 39 will be tightened up again. thereby holding the bedplate in proper position on the bedplate beam. After approximate adjustment of the bedplate has once. been attained, and the bolts 40 have been tightened to secure the support 32 to the bedplate beam 38. these bolts need not be loosened in making the final adjustment of the bedplate. The above described construction is such that the bedplate may be adjusted rapidly and accurately with relation to the roller and thereafter maintained in correct position. As these rolling machines have heretofore been constructed, the operator has been required to apply the greater part, if not all,

it to the treadle in order to lift and maintain the bedplate in a raised position so as to press the hide or side of leather against the roller. According to my resent invention I have eliminated this la orious task by providing neumatic means for lifting and pressing t 10 bedplate beam and its bedplate with the work thereon up against the roller. An air pump 42 supplies air to a reservoir tank {l3 which delivers the air through a pipe H to a pneumatic lifter 4:5, in which a piston 46 reciprocates vertically to raise and lower the bed late beam. The flow of air to the lifter 45 is controlled by a treadle 48 by which the air may be admitted below the piston 46 to lift the bedplate beam 38 and the bedplate toward the roller. After the rolling operation has been performed, the release of the treadle 48 allows the air to escape from below the piston so as to permit the bedplate beam to be depressed, thereby freeing the hide or side of author from the pressure of the roller. The

specific means for carrying out this feature of the invention is illustrated in the drawings, but it is immaterial, broadly speaking, what means are employed for this purpose, as I believe I am the first to produce a machine for rolling leather or the like material, wherein pneumatic bedplate-lifting means are provided for yieldingly sup )orting the bedplate against the pressure 0 the roller. It is apparent, therefore, that this feature of the invention may be varied in detail without departure from the scope of the inventlon.

It will be observed that the 'aoint of application of the pressure exerted b the pneumatic liftingmeans is substantially under the middle of the bedplate. Inasmuch as the bed late beam 38 is made of resilient materia it is obvious that if the hide or side of leather resting on the bedplate is thicker at one end than at the oth'er, the resiliency of the material of which the bedplate beam 38 is composed and the manner-of applying the lifting pressure contribute to permit that end of the bedplate upon which the thicker part of the leather is resting to be depressed, so that the compression of the leather will be uniform throughout. Were the lifting pressure applied equally to both ends of the bedplate, it is apparent that the thicker places of the leather would be compressed until they were of the same thickness as the thin places, thereby entailing a waste of energy in the compressing operation and reducing the value of the product.

Having thus described the invention, what is claimed is 1. A machine for rolling leather having, in combination, a roller, a bed plate beam, a bed plate carrier support secured thereto, a bed plate carrier mounted on the support,

means for positively adjusting the carrier laterally and longitudinally on the support, and a. bed plate on the carrier.

2. A machine for rolling leather having, in combination, a bed plate beam, a bed plate carrier support thereon, a bed plate carrier mounted on the support, means for positively adjusting the carrier laterally and lonritudinally with respect to the support, :1 led plate mounted on the carrier, a roller, means for supporting the roller comprising a roller beam, an inverted T-shaped roller support carrier secured thereto and a roller support mounted on the carrier, and means for actuating the roller beam.

3. A machine for rolling leather having, in combination, a roller, actuating means therefor, a bed plate movable toward and from the roller, a support for the bed plate, pneumatic devices for moving the bed plate toward the roller located under the bed plate support in a position normal to the path of the roller, and means for controlling the pneumatic devices.

4-. An adjustment gage for use on ma.- chines for rolling leather, provided with a roller. a roller support, and means for moving the roller, Sl11( gage being adapted for attachment to the roller support and having provision by virtue of whic i the angular position of the roller with relation to its path of motion may be ascertained.

5. A U-shaped adjustment gage for use on machines for rolling leather, provided with aroller, a roller support, and means for moving the roller, said gage being adapted for attachment to the roller support and having a straight edge by which the perpendicularity of the roller to its path of motion may be determined.

WILLIAM W. WHITING.

Copies 0! this patent may be obtained for five cent: each. by addrcmn the "Commissioner of Patents. Wuhlagton. D. 0." 

